Write each of the stateemnts in the form "if p, then q " p : It is necessary to have a password to log on to the server.
There is a three-digit password and it is known that each digit can have four values 5,6,7 or 8 . If there is exactly one correct password, how many distinct wrong passwords are there?
Which of the following is not true concering user IDs and passwords?
A password of 4 letters is to be formed with vowels alone. How many such passwords are possible if. (a) repetition of letters is allowed, (b) repetition of letters is not allowed?
